Plesiosaurus (Greek: πλησίος (plesios), near to + σαῦρος (sauros), lizard) is a genus of extinct, large marine sauropterygian reptile that lived during the Early Jurassic.

Plesiosaurus, an early plesiosaur, was about 4.5 metres (15 feet) long, with a broad, flat body and a relatively short tail. It swam by flapping its fins in the water, much as sea lions do today, in a …

May 5, 2025 · An in-depth profile of Plesiosaurus, including this marine reptile's characteristics, behavior, and habitat.

Plesiosaurus is an extinct marine reptile which lived approximately 135 million to 120 million years ago – from the Early to the Middle Jurassic Period. It was first discovered in the winter of 1823 …

Discover the fascinating world of plesiosaurs also known as clade Plesiosauria. Explore long-necked marine reptiles facts & pictures from their ocean habitats.

Oct 19, 2023 · While dinosaurs roamed the Earth, marine reptiles in the order Plesiosauria swam in our planet's prehistoric oceans. Find out which creatures belonged in this group, how they …

Dec 10, 2023 · The size of plesiosaurs varied considerably, but some species, like the early-known Plesiosaurus, measured around 15 feet in length. Their habitats stretched across the …

Plesiosaurs (Greek: plesios meaning "near" or "close to" and sauros meaning "lizard") were carnivorous, aquatic (mostly marine) reptiles that lived from the Triassic to the Cretaceous …

May 27, 2024 · This skeleton of a Plesiosaurus shows its incredibly long neck. ©Lefteris Papaulakis/Shutterstock.com Habitat – When and Where It Lived Plesiosaurs were found in …

The lumping of many species into the genus Plesiosaurus was initiated during the 1800s when plesiosaurs were first being studied and described. Many species formerly included in …